Department of Mechanical Engineering, Government College of Engineering, Salem, India;Suguna College of Engineering, Coimbatore, Tamilnadu, India;
M. Mohanraj;G. P. Rajamani;
Glass fiber reinforced composites are widely used in the various industrial applications. The present study deals with the experimental investigation on the manufactured compositeswith the aid of the phenolic resin. The specimens were prepared as per ASTM. Standard with two different fibre: resin ratios. The effect of various drilling parameters affects the mechanical properties of the composites with the aid of Taguchi L9 orthogonal array. The drilling performance was evaluated in terms of thrust force, torque, delamination and surface roughness. The best performance characteristics were obtained with 8 mm drill bit when drilling of phenolic resin (25:75%) composites with the higher cutting point angle of 140°, feed rate of 0.2 m/min and lower cutting speed of 1500 rpm. Similarly in 30:70% composites with the point angle of 140°, lower feed rate of 0.1 m/min and higher cutting speed of 3500 rpm the performance was good.
phenolic resin;delamination;surface roughness and ANOVA;